1187225 has 18 divisors (see below), whose sum is σ = 1599786. Its totient is φ = 873600.

The previous prime is 1187201. The next prime is 1187227. The reversal of 1187225 is 5227811.

It can be written as a sum of positive squares in 9 ways, for example, as 652864 + 534361 = 808^2 + 731^2 .

It is not a de Polignac number, because 1187225 - 2¹⁶ = 1121689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1187194 and 1187203.

It is not an unprimeable number, because it can be changed into a prime (1187227) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4085 + ... + 4365.

It is an arithmetic number, because the mean of its divisors is an integer number (88877).

2^1187225 is an apocalyptic number.

It is an amenable number.

1187225 is a deficient number, since it is larger than the sum of its proper divisors (412561).

1187225 is a wasteful number, since it uses less digits than its factorization.

1187225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 299 counting only the distinct ones).

The product of its digits is 1120, while the sum is 26.

The square root of 1187225 is about 1089.5985499256. The cubic root of 1187225 is about 105.8874145789.

The spelling of 1187225 in words is "one million, one hundred eighty-seven thousand, two hundred twenty-five".